1 # LIBCURL_CHECK_CONFIG ([DEFAULT-ACTION], [MINIMUM-VERSION],
2 # [ACTION-IF-YES], [ACTION-IF-NO])
3 # ----------------------------------------------------------
4 # David Shaw <dshaw@jabberwocky.com> Jun-21-2005
6 # Checks for libcurl. DEFAULT-ACTION is the string yes or no to
7 # specify whether to default to --with-libcurl or --without-libcurl.
8 # If not supplied, DEFAULT-ACTION is yes. MINIMUM-VERSION is the
9 # minimum version of libcurl to accept. Pass the version as a regular
10 # version number like 7.10.1. If not supplied, any version is
11 # accepted. ACTION-IF-YES is a list of shell commands to run if
12 # libcurl was successfully found and passed the various tests.
13 # ACTION-IF-NO is a list of shell commands that are run otherwise.
14 # Note that using --without-libcurl does run ACTION-IF-NO.
16 # This macro defines HAVE_LIBCURL if a working libcurl setup is found,
17 # and sets @LIBCURL@ and @LIBCURL_CPPFLAGS@ to the necessary values.
18 # Other useful defines are LIBCURL_FEATURE_xxx where xxx are the
19 # various features supported by libcurl, and LIBCURL_PROTOCOL_yyy
20 # where yyy are the various protocols supported by libcurl. Both xxx
21 # and yyy are capitalized. See the list of AH_TEMPLATEs at the top of
22 # the macro for the complete list of possible defines. Shell
23 # variables $libcurl_feature_xxx and $libcurl_protocol_yyy are also
24 # defined to 'yes' for those features and protocols that were found.
25 # Note that xxx and yyy keep the same capitalization as in the
26 # curl-config list (e.g. it's "HTTP" and not "http").
28 # Users may override the detected values by doing something like:
29 # LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
31 # For the sake of sanity, this macro assumes that any libcurl that is
32 # found is after version 7.7.2, the first version that included the
33 # curl-config script. Note that it is very important for people
34 # packaging binary versions of libcurl to include this script!
35 # Without curl-config, we can only guess what protocols are available.
37 AC_DEFUN([LIBCURL_CHECK_CONFIG],
39 AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL])
40 AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4])
41 AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6])
42 AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz])
43 AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS])
45 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP])
46 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS])
47 AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP])
48 AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS])
49 AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE])
50 AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET])
51 AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP])
52 AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT])
55 AC_HELP_STRING([--with-libcurl=DIR],[look for the curl library in DIR]),
56 [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])])
58 if test "$_libcurl_with" != "no" ; then
62 _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
66 if test -d "$_libcurl_with" ; then
67 CPPFLAGS="${CPPFLAGS} -I$withval/include"
68 LDFLAGS="${LDFLAGS} -L$withval/lib"
71 AC_PATH_PROG([_libcurl_config],[curl-config])
73 if test x$_libcurl_config != "x" ; then
74 AC_CACHE_CHECK([for the version of libcurl],
75 [libcurl_cv_lib_curl_version],
76 [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`])
78 _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse`
79 _libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse`
81 if test $_libcurl_wanted -gt 0 ; then
82 AC_CACHE_CHECK([for libcurl >= version $2],
83 [libcurl_cv_lib_version_ok],
85 if test $_libcurl_version -ge $_libcurl_wanted ; then
86 libcurl_cv_lib_version_ok=yes
88 libcurl_cv_lib_version_ok=no
93 if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then
94 if test x"$LIBCURL_CPPFLAGS" = "x" ; then
95 LIBCURL_CPPFLAGS=`$_libcurl_config --cflags`
97 if test x"$LIBCURL" = "x" ; then
98 LIBCURL=`$_libcurl_config --libs`
100 # This is so silly, but Apple actually has a bug in their
101 # curl-config script. Fixed in Tiger, but there are still
102 # lots of Panther installs around.
104 powerpc-apple-darwin7*)
105 LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
110 # All curl-config scripts support --feature
111 _libcurl_features=`$_libcurl_config --feature`
113 # Is it modern enough to have --protocols? (7.12.4)
114 if test $_libcurl_version -ge 461828 ; then
115 _libcurl_protocols=`$_libcurl_config --protocols`
121 unset _libcurl_wanted
124 if test $_libcurl_try_link = yes ; then
126 # we didn't find curl-config, so let's see if the user-supplied
127 # link line (or failing that, "-lcurl") is enough.
128 LIBCURL=${LIBCURL-"-lcurl"}
130 AC_CACHE_CHECK([whether libcurl is usable],
131 [libcurl_cv_lib_curl_usable],
133 _libcurl_save_cppflags=$CPPFLAGS
134 CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
135 _libcurl_save_libs=$LIBS
136 LIBS="$LIBS $LIBCURL"
138 AC_LINK_IFELSE(AC_LANG_PROGRAM([#include <curl/curl.h>],[
139 /* Try and use a few common options to force a failure if we are
140 missing symbols or can't link. */
142 curl_easy_setopt(NULL,CURLOPT_URL,NULL);
144 x=CURLOPT_WRITEFUNCTION;
146 x=CURLOPT_ERRORBUFFER;
149 ]),libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no)
151 CPPFLAGS=$_libcurl_save_cppflags
152 LIBS=$_libcurl_save_libs
153 unset _libcurl_save_cppflags
154 unset _libcurl_save_libs
157 if test $libcurl_cv_lib_curl_usable = yes ; then
159 # Does curl_free() exist in this version of libcurl?
160 # If not, fake it with free()
162 _libcurl_save_cppflags=$CPPFLAGS
163 CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
164 _libcurl_save_libs=$LIBS
165 LIBS="$LIBS $LIBCURL"
167 AC_CHECK_FUNC(curl_free,,
168 AC_DEFINE(curl_free,free,
169 [Define curl_free() as free() if our version of curl lacks curl_free.]))
171 CPPFLAGS=$_libcurl_save_cppflags
172 LIBS=$_libcurl_save_libs
173 unset _libcurl_save_cppflags
174 unset _libcurl_save_libs
176 AC_DEFINE(HAVE_LIBCURL,1,
177 [Define to 1 if you have a functional curl library.])
178 AC_SUBST(LIBCURL_CPPFLAGS)
181 for _libcurl_feature in $_libcurl_features ; do
182 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
183 eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
186 if test "x$_libcurl_protocols" = "x" ; then
188 # We don't have --protocols, so just assume that all
189 # protocols are available
190 _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT"
192 if test x$libcurl_feature_SSL = xyes ; then
193 _libcurl_protocols="$_libcurl_protocols HTTPS"
195 # FTPS wasn't standards-compliant until version
197 if test $_libcurl_version -ge 461568; then
198 _libcurl_protocols="$_libcurl_protocols FTPS"
203 for _libcurl_protocol in $_libcurl_protocols ; do
204 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
205 eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
210 unset _libcurl_try_link
211 unset _libcurl_version_parse
212 unset _libcurl_config
213 unset _libcurl_feature
214 unset _libcurl_features
215 unset _libcurl_protocol
216 unset _libcurl_protocols
217 unset _libcurl_version
220 if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
221 # This is the IF-NO path
224 # This is the IF-YES path